<template>
  <div class="app-container">
    课程列表
    <!--查询表单-->
    <el-form :inline="true" class="demo-form-inline">
      <el-form-item>
        <el-input v-model="courseQuery.title" placeholder="课程名称"/>
      </el-form-item>

      <el-form-item>
        <el-select v-model="courseQuery.status" clearable placeholder="课程状态">
          <el-option value="Normal" label="已发布"/>
          <el-option value="Draft" label="未发布"/>
        </el-select>
      </el-form-item>

      <el-button type="primary" icon="el-icon-search" @click="getList()">查询</el-button>
      <el-button type="default" @click="resetData()">清空</el-button>
    </el-form>

    <!-- 表格 -->
    <el-table
      :data="list"
      border
      fit
      highlight-current-row>

      <el-table-column
        label="序号"
        width="70"
        align="center">
        <template slot-scope="scope">
          {{ (page - 1) * limit + scope.$index + 1 }}
        </template>
      </el-table-column>

      <el-table-column prop="title" label="课程名称" width="300" />

      <el-table-column label="课程状态" width="200">
        <template slot-scope="scope">
          {{ scope.row.status==='Normal'?'已发布':'未发布' }}
        </template>
      </el-table-column>

      <el-table-column prop="lessonNum" label="课时数" width="200"/>

      <el-table-column prop="gmtCreate" label="添加时间" width="160"/>

      <el-table-column prop="viewCount" label="浏览数量" width="100" />

      <el-table-column label="操作" width="500" align="center">
        <!--
        TODO 没写完的部分
        -->
        <template slot-scope="scope">
          <router-link :to="'/course/info/'+scope.row.id">
            <el-button type="primary" size="mini" icon="el-icon-edit">编辑课程基本信息</el-button>
          </router-link>
          <router-link :to="'/course/editChapter/'+scope.row.id">
            <el-button type="primary" size="mini" icon="el-icon-edit">编辑课程章节信息</el-button>
          </router-link>
          <el-button type="danger" size="mini" icon="el-icon-delete" @click="removeDataById(scope.row.id)">删除课程信息</el-button>
        </template>
      </el-table-column>
    </el-table>

    <!-- 分页 -->
    <el-pagination
      :current-page="page"
      :page-size="limit"
      :total="total"
      style="padding: 30px 0; text-align: center;"
      layout="total, prev, pager, next, jumper"
      @current-change="getList"
    />

  </div>

</template>

<script>
import course from '../../../api/course/course'
  export default {

      data(){
        return{
          list: null, //查询之后给接口返回的数据装的集合
          page: 1, //当前页
          limit: 5, //每页显示记录数
          courseQuery: {}, //条件封装对象
          total: 0, //总记录数
        }
      },
      created() {
        this.getList();
      },
      methods:{
        //删除课程信息
        removeDataById(courseId){
          this.$confirm("此操作将永久删除该课程记录, 是否继续?", "提示", {
            confirmButtonText: "确定",
            cancelButtonText: "取消",
            type: "warning",
          }).then(() => {
            //点击确定，执行then方法
            course.deleteCourseById(courseId).then((resp) => {
              //删除成功
              //提示信息
              this.$message({
                type: "success",
                message: "删除成功!",
              });
              //刷新页面
              this.getList();
            });
          });
        },
        // course.getListCourse()
        //课程列表的方法
        getList(page=1){
          this.page = page;
          course.getCourseListPage(this.page,this.limit,this.courseQuery)
          .then(resp=>{
            //response接口返回的数据
            console.log(resp);
            this.list = resp.data.rows;
            this.total = resp.data.total;
            //   console.log(this.list)
            // console.log(this.total);

          })//请求成功
            .catch(error=>{
              console.log(error);
            })//请求失败
        },
        //清空方法
        resetData() {
          //表单输入项数据清空
          this.courseQuery = {};
          //查询所有课程数据
          this.getList();
        },
      },



  }
</script>

